Only one week after Ke$ha admitted herself into a Chicago rehab center for an undisclosed eating disorder, the singer’s mom, famed songwriter Pebe Sebert, is making allegations that her daughter’s health issues are due to pressure to be thin from within her own camp.

In an interview with People, Sebel says that Ke$ha’s advisors — including her go-to producer Dr. Luke — put pressure on the pop star to lose weight. Sebel claims that Luke had been telling her she had to get in shape. “She was exercising and dieting and ultimately doing everything she could, but not getting thin fast enough,” Sebert told the mag. “And that’s when she first became bulimic.”

In an exclusive statement to People via his rep, Dr. Luke denies Sebert’s allegations calling them “completely false.”

“It is unfortunate that at a time Ke$ha is suffering immensely and trying to heal at a treatment center, her mother is taking this approach with the media,” the statement reads. “I give Ke$ha my utmost support and well wishes for a quick return to health.”

(Paul A. Hebert/Getty Images)

Before entering rehab on Jan. 6, Ke$ha released a statement saying she would be “unavailable for the next 30 days” seeking treatment for an undisclosed eating disorder.

“I’m a crusader for being yourself and loving yourself but I’ve found it hard to practice,” she wrote. “I’ll be unavailable for the next 30 days, seeking treatment for my eating disorder … to learn to love myself again. Exactly as I am.”

This week, Ke$ha and Pitbull reached No. 1 on the Hot 100 with “Timber.”